JPS58167860A - Piston for sterling engine - Google Patents

Piston for sterling engine

Info

Publication number
JPS58167860A
JPS58167860A JP5157082A JP5157082A JPS58167860A JP S58167860 A JPS58167860 A JP S58167860A JP 5157082 A JP5157082 A JP 5157082A JP 5157082 A JP5157082 A JP 5157082A JP S58167860 A JPS58167860 A JP S58167860A
Authority
JP
Japan
Prior art keywords
piston
heat
shield
section
piston head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP5157082A
Other languages
Japanese (ja)
Inventor
Shigemi Nagatomo
長友　繁美
Masatoshi Shimura
志村　政利
Akio Mitani
三谷　明男
Moriyoshi Sakamoto
坂本　守義
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP5157082A priority Critical patent/JPS58167860A/en
Publication of JPS58167860A publication Critical patent/JPS58167860A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G1/00—Hot gas positive-displacement engine plants
    • F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
    • F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
    • F02G1/053—Component parts or details
    • F02G1/0535—Seals or sealing arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G1/00—Hot gas positive-displacement engine plants
    • F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
    • F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
    • F02G1/053—Component parts or details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G2243/00—Stirling type engines having closed regenerative thermodynamic cycles with flow controlled by volume changes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G2253/00—Seals
    • F02G2253/02—Reciprocating piston seals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G2258/00—Materials used
    • F02G2258/10—Materials used ceramic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G2270/00—Constructional features
    • F02G2270/40—Piston assemblies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

PURPOSE:To prevent the deterioration of the heat efficiency of an engine by reducing the heat leakage due to the radiant heat from a piston. CONSTITUTION:A piston head 7b of dome shape is provided on the top end section of an expansion piston 7 of a sterling engine, while a heat shield 14 made of non-metallic material such as ceramic for partitioning the hollow section of the piston head is provided in said section. Said shield 14 is made thinner than the thickness of wall of the piston head 7b, while a pressure uniforming hole 15 for uniforming the pressure in and out of said shield 14 is made in the side wall section. A pressure uniforming hole 17 is made in the top wall section of the piston 7 while the hollow section 14a in said shield 14 is conducted to the hollow section at the connecting side of the piston. The radiant heat from said piston head 7b is shielded by said shield 14 to prevent the heat transmission to the piston body 7a.

Description

【発明の詳細な説明】 〔発明の抄輔分野〕 本発１Ｉ１１扛、膨張シリンダと仕組シリンダにそれぞ
れ加熱器と冷却口とを付ＩＮ４ゼしめるとともに。DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention includes a heater and a cooling port respectively attached to the expansion cylinder and the working cylinder.

両者を再生器によって互いに連結したスターリングエン
ジ／にふ・けるスターリングエンジン用ピストンに関−
ｆゐ。This article relates to a Stirling engine piston in which both are connected to each other by a regenerator.
f.

〔１＃、明の杼術的’１１１１）およびその間動点〕一
般に、上記スターリングエンレンは、熱エネルギによっ
て膨張シリンダおよび圧縮シリンダ内のピストンを往俵
違動さセる熱サイクル部と、その出力を一１転力として
ルり出てクランク榛構部と會有し、その両シリンダおよ
びそれらを結ぶ加熱器、再生器、冷却器内に、Ｂ・、　
Ｈ雪＊　ｋｈ　等の不＃＃４！ｔ−気体か動作流体とし
″′Ｃ充窄されている。[1#, Ming's Shuttle Technique '1111) and their moving points] In general, the above-mentioned Stirling Enren has a thermal cycle section that moves the pistons in the expansion cylinder and the compression cylinder back and forth by thermal energy, and B...
No ##4 such as H snow * kh! It is filled with t-gas or working fluid.

すなわち、第１図扛上１スターリングエンジンの蒙略柳
成図であって、クランク室ｌの頂伊部には膨張シリンダ
λおよび圧縮シリンダ３か突設されており、上記膨張シ
リンダコには高温熱源によって加熱されゐ加熱器ダが接
続され、圧縮シリンダ３には冷却水によって冷却される
冷却％ｊか接続啓わており、さらに上配加熱器参および
冷却器ｊは再生器ｔを介して互いに！＃続されている。In other words, Fig. 1 is a diagram of a Stirling engine, in which an expansion cylinder λ and a compression cylinder 3 are protruded from the top of the crank chamber l, and the expansion cylinder is heated by a high-temperature heat source. The compressor cylinder 3 is connected to the compressor cylinder 3, which is cooled by cooling water, and the upper heater and the cooler j are connected to each other via the regenerator t. #Continued.

一方、上記膨張シリンダコおよび圧動シリンダ３内に社
、それぞれ膨張ピストン７および圧縮ピストンｔが往つ
動可能に配設されてふり、両ピストン７、ｒｆｉそれぞ
れコネクテイングロッドデ。On the other hand, an expansion piston 7 and a compression piston t are movably disposed in the expansion cylinder and the pressure cylinder 3, respectively, and both pistons 7 and the RFI connecting rod are respectively connected.

ｌ（によつＴ、前記クランク１１１円に配設さねたクラ
ンク＠／／に連結され１両ピストンか互いに所定位相差
例オはデＯ０を本って往復動するようＫＬ、Ｔある０ 上記膨張シリンダコ、圧縮シリンダＪ、加熱器ダ、冷却
器！および再住器ｔ、並ひにそれら會結ぶ配管中には、
Ｈ＋ｓ　、　Ｔｌ鵞、＄はＮ！雛の動作流体か封スされ
ており、両ピスト／部においては両ピストン７、ｒに装
着さｔまたピストンリングによってシール寧ｔ１ている
〇 し力して、加熱勧ダで動作流体か７ｋｌ温熱源によって
加熱器わると、その１・作流体か膨張して膨張ピストン
７カ・仕丁され、クランク軸／／の回動か行なわれるっ
着た。上記膨張ピストン７か上昇行程に移ると、１・作
流体は加熱器４Ａを通過して再生器ＡＫ＃送され、そこ
で再生器を内に充填されている蓄熱材に熱を与え、？＠
却＆ｊへと流れて冷却さね、圧縮ピストンｌの上昇行程
に伴なって圧縮される。このようにして圧縮された動作
流体ね逆に加熱器弘訃に流れ、その途中で帽記再生器６
内の蓄熱材力ら熱を・奪いなから泥炭を上昇して、加熱
益ダへ流れ込み、そこで再び高温熱源によって加Ｕ贋張
ゼし齢られる〇 ところで、このようカスターリングエンジンにお約る性
能は動作流体の高温部湯度と低温部濁度に強く依存して
ふり、高温部湯度か高い程その熱効率は高くなり、ｍ＃
ｓ妙・らの熱リークを極力少なくする必ＩＩｋかある〇 そこで、％に膨張ピストンにおいては、第２図に示すよ
うに、ピスト／本体７　ａ　ｆ）頂部にドーム状のピス
トンヘッド７１３を一体的に装着し、その熱伝導面積を
少なくし、シリンダ内からピストンを軒て放熱さねゐ量
が極力小さくなるようにされている。l(Yotsu T, said crank 111 yen is connected to the crank @//, and both pistons have a predetermined phase difference from each other. In the expansion cylinder, compression cylinder J, heater, cooler!, and rehabitator T, as well as the piping connecting them,
H+s, Tl, $ is N! The working fluid of the chick is sealed, and in both pistons/sections, it is attached to both pistons 7 and r and is sealed by a piston ring. When the heater changes depending on the source, the working fluid expands and the expansion piston 7 is separated, causing the crankshaft to rotate. When the expansion piston 7 moves to the upward stroke, 1. The working fluid passes through the heater 4A and is sent to the regenerator AK#, where it gives heat to the heat storage material filled inside the regenerator. @
Flows into the air and j to be cooled, and is compressed as the compression piston l moves upward. The working fluid compressed in this way flows reversely to the heater heater, and on the way, it passes through the cap regenerator 6.
The heat is taken away from the heat storage material inside the peat, which then rises through the peat and flows into the heating waste, where it is heated again by a high-temperature heat source and aged. depends strongly on the temperature of the high temperature part and the turbidity of the low temperature part of the working fluid, and the higher the temperature of the high temperature part, the higher the thermal efficiency, and m#
It is necessary to minimize heat leakage from the piston/main body 7a f) For the expansion piston, as shown in Fig. 2, a dome-shaped piston head 713 is integrated on the top of the piston/main body 7 The heat conduction area is reduced, and the amount of heat dissipated from the inside of the cylinder by the piston is minimized.

し力、しながら、上記膨張ピストンにおいては約ｔｏｏ
　’ｉ：程度の高温ガスにさらされるため、熱伝導のみ
ならずピストンヘッドフｂ部の熱か熱ふく射によってピ
ストン本体７１に伝わり一りランク室尋に放熱され、そ
の熱ふく射による熱リークも無精できない程度となって
、それによってエンジンの熱効率が低下すゐ等の間蒙点
かある。force, while in the above expansion piston it is about too
'i: Because it is exposed to high-temperature gas of approximately In some cases, the thermal efficiency of the engine decreases.

〔発明の目的〕[Purpose of the invention]

本発明夷このような点に鑑み、ピストンの熱ふく射によ
ゐ熱リークを減少せしめ、エンｉ／／の熱効率の低下を
防止し得るようにしたスターリングエンジン用ピストン
を提供ｊゐことを目的とす゛る・〔発明の概要〕 本発明Ｌピストン本体の頂端部にドーム状のピストンヘ
ッドｔ−訟けるとともに、そのピストンヘッド空所内に
その９所を内外に区劃する熱しや蔽体ｆ設すたことを製
徴とする・ 〔発明の実施例〕 謝３図は１本桁明のスターリングエンジン用ピスト／の
縦断ｆｉｌ１面図であって、ピストン本体７ａの頂部に
は、シリンダ内の圧力に耐えるたけの比較的厚場か薄い
壁厚を有すゐドーム状のピストンヘッド７ｂか一体的に
連結されておシ、ピストン本体の１ｌＩｌ壁部には複数
のピスト／リング／２−１）装着され、イのピスト／本
体７ａにピストンピン／３ｔ−介【７てコネクテイング
ロッドタの先端か連結されている・ ところで、上記ドーム状のピストンヘッド７ｂ内の空所
内には、その！ｌＴｔ内外に区劃するセランツク軒の非
金属材料力らなる熱し中藪体／４／が設けられている。In view of these points, it is an object of the present invention to provide a piston for a Stirling engine that can reduce heat leakage due to heat radiation from the piston and prevent a decrease in the thermal efficiency of the engine. [Summary of the Invention] The present invention L has a dome-shaped piston head disposed at the top end of the piston body, and a heating shield F is installed in the piston head cavity to separate nine parts from inside and outside. [Embodiment of the Invention] Figure 3 is a vertical cross-sectional view of a piston for a Stirling engine with a straight line, and the top of the piston body 7a has a structure that can withstand the pressure inside the cylinder. A dome-shaped piston head 7b having a relatively thick or thin wall thickness is integrally connected, and a plurality of pistons/rings/2-1) are attached to the wall portion of the piston body. The tip of the connecting rod is connected to the piston/body 7a of A by way of the piston pin/3t. A heating center /4/ made of non-metallic materials of Selantsk eaves is provided inside and outside the ITt.

上記熱し中藪体／ｌ１１０　ｔｒ記ピストンヘッド７ｂ
の壁厚よりさらに薄肉としており、その１１１１壁部に
は熱し中藪体／＋の内外の圧力を均一にする給圧孔１３
か穿設さｔｌておシ、さらにピストン本体の頂壁部には
熱し中鼾体／４１内の空所／４Ｌ＆をピストン本体のコ
ネクテイングー空間ｌｔと連通する均圧孔１７が設けら
れているＯ しかして、ピスト／ヘッド７ｂのｍ部カ・らのふく射熱
は、ピストンヘッド７ｂ内の空所にｈｔｉらねた熱しゃ
動体／４１によってし中蔽され、ピストン本体７ａへの
熱ふく射による熱伝達が防止される・また、上記熱し中
動体／＜４ｉｊその内外が均圧孔１５によって汗カバラ
ンスさせであるため、逢の肉厚もきわめて薄くすること
ができ、そのため熱し中動体の熱伝導によるピストン本
体へＱ熱リークもきわ袷て少４いものとなる。し六かっ
て、シリンダ内の高温にもかかわらずピストン本体の混
成上りｈＩｈ小限におさえられ、ピスト／りングの温度
上昇も低下せしに）られ、当骸部の摩擦力を低減させる
ことかでき、それによる出力低下か防止される◎〔折明
の効果〕 以上峠明し六ようく・本発明はピストン本体の重音ＣＫ
設けられたドーム状のシリンダヘッドの空所内に、その
９所を内外に区ＩＦｌｌする熱しゃ動体を設ケ六ので、
ピスト／ヘッドからピストン本体への熱ふく射による熱
伝達量音減少ゼしｈること力、でき、シリンダ力・らの
熱リークを防止し、エンジンの大幅な効率巨；上を図る
ことかできる０またそれに応じてピストンリング部の温
度上昇を防止できピストンリングのＩＩ耗を低減せしめ
ることができて、エンジンのｉ＃久性およびも１性を向
上せしめることかできる擲の効果を奏する・ 帆　図体１のヤ岸な峠明 第ｔ　［＆ｌ　（＋スターリングエンジンの概略構成図
、１２図Ｈ従沫のスターリングエンジン用ピストンのｆ
ｌ：動側面ツ１、第３図社本発明のスターリングエンジ
ン用ピストンの縦断ｆｉｌｌ　１１　！’ｌである。The above-mentioned heating medium body / l110 tr piston head 7b
It is thinner than the wall thickness, and the 1111 wall has a pressure supply hole 13 that heats and equalizes the pressure inside and outside the core.
Furthermore, a pressure equalizing hole 17 is provided in the top wall of the piston body to communicate the cavity /4L in the heating medium body /41 with the connecting space lt of the piston body. Therefore, the heat radiated from parts M of the piston/head 7b is blocked by the heat shield/41 arranged in the space inside the piston head 7b, and the heat radiated to the piston body 7a. Heat transfer is prevented.In addition, since the inside and outside of the heating medium moving body are balanced by the pressure equalizing holes 15, the wall thickness of the heat transfer body can be made extremely thin. Q heat leakage to the piston body due to conduction is also significantly reduced. Therefore, despite the high temperature inside the cylinder, the mixed rise of the piston body can be suppressed to a minimum, and the temperature rise of the piston/rings can be kept to a minimum (without reducing the temperature rise), reducing the frictional force in the relevant part. ◎ [Effect of the Orientation] The present invention is designed to reduce the heavy sound CK of the piston body.
In the dome-shaped cylinder head cavity provided, a heat shielding body is installed that separates the inside and outside of the nine locations.
It reduces the amount of heat transfer due to heat radiation from the piston/head to the piston body, reduces noise, prevents heat leakage from cylinder force, and greatly increases engine efficiency. In addition, it is possible to prevent the temperature rise of the piston ring part and reduce the wear of the piston ring, which has the effect of improving the durability and performance of the engine. 1 of Yagishi Togemei t [&l (+Schematic configuration diagram of Stirling engine, Figure 12H of the Stirling engine piston f
l: Moving side surface 1, Fig. 3 Vertical cross section of the piston for the Stirling engine of the present invention Fill 11! 'l.

７・・・詑張ピストン、！・・・圧縮ピストン、７ａ・
・・ピスト／本体、７ｂ・・・ピストンヘッド、　／＋
・・・熱し中動体、１５　、　／７・・・均圧孔。7...Shoubari piston!・・・Compression piston, 7a・
... Piston/body, 7b... Piston head, /+
... Heating medium moving body, 15, /7... Pressure equalization hole.

小願人代理人　　　猪　　股　　　　　清も　ｌ　図 氾２　図　　　　　　も　３　図Petitioner's agent Boar crotch Kiyoshi also figure Flood 2 Figure also Figure 3

Claims (1)

【特許請求の範囲】 １、ピストン本体の頂端部にドーム状のピストンヘッド
空所内けるとともに、そのピストンヘッド空所内にその
９所を内外に区劃すｂ熱し中蔽体を般社たことを特徴と
する。スターリングエンジン用ピストン。 ユピストン祉膨張タービンであることを特徴とする。＊
許詐求の節回１１！、を項紀載のスターリングエンジン
用ピストン・ よ熱じや薇体轄セラミック製でを・ることを特徴とする
特許請求の静囲餉１項箇たけ第コ寝記１のスターリング
エンジン用ピストン。 肌ピストン本体の１ａ部および熱し中鼾体には、ピスト
ンヘッド部内とコネクチングロッド１１１９間とを連通
せしめる均圧上が形成されていることを１１？！Ｆ微と
す、る、特許請求の岬曲第１項記載のスターリングエン
ジン用ピストン。 （[Scope of Claims] 1. A dome-shaped piston head cavity is placed in the top end of the piston body, and a heated intermediate shield is installed inside the piston head cavity, dividing nine areas into the inside and outside. Features. Piston for Stirling engine. It is characterized by being a piston expansion turbine. *
Section 11 of asking for forgiveness! , The piston for a Stirling engine according to paragraph 1 of the patent claim, characterized in that it is made of hot-heated ceramic. 11? It is noted that a pressure equalization area is formed in the part 1a of the skin piston body and the heating rod body to allow communication between the inside of the piston head part and the connecting rod 1119. ! A piston for a Stirling engine according to claim 1 of the patent claim. (
JP5157082A 1982-03-30 1982-03-30 Piston for sterling engine Pending JPS58167860A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5157082A JPS58167860A (en) 1982-03-30 1982-03-30 Piston for sterling engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5157082A JPS58167860A (en) 1982-03-30 1982-03-30 Piston for sterling engine

Publications (1)

Publication Number Publication Date
JPS58167860A true JPS58167860A (en) 1983-10-04

Family

ID=12890615

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5157082A Pending JPS58167860A (en) 1982-03-30 1982-03-30 Piston for sterling engine

Country Status (1)

Country Link
JP (1) JPS58167860A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102242681A (en) * 2010-05-14 2011-11-16 曼柴油机涡轮机欧洲股份公司曼柴油机涡轮机德国分公司 Method for optimizing function of a piston ring set and piston ring set using the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102242681A (en) * 2010-05-14 2011-11-16 曼柴油机涡轮机欧洲股份公司曼柴油机涡轮机德国分公司 Method for optimizing function of a piston ring set and piston ring set using the same
DE102010020490A1 (en) 2010-05-14 2011-11-17 Man Diesel & Turbo, Filial Af Man Diesel & Turbo Se, Tyskland Method for optimizing function of piston ring package of piston of piston internal combustion engine, particularly two stroke-diesel engine, involves exposing combustion pressure and pressure existing below piston
DE102010020490B4 (en) * 2010-05-14 2014-02-13 Man Diesel & Turbo, Filial Af Man Diesel & Turbo Se, Tyskland Method for optimizing the function of a piston ring package as well as a suitable piston ring package

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